she is 68-year-old constance holden. she is a portrait artist and a skin science journalist and wrote for science magazine and reportedly just left work yesterday evening when she was involved in this accident, struck by that d.c. national guard truck at 12th and new york avenues. she was died on the scene. now, there is still a very large police presence here around the convention center today. there are a lot of different traffic patterns because of all of the road closures. but really so far so good today. we've had no major problems. >> the nuclear summit day two. widespread road closures still in place, but drivers continue to heed the warnings. although a little heavier than monday, traffic is still lighter than usual. >> it was actually a straight shot. we came from baltimore. so. >> better than usual? >> actually, it was. >> well, it's not too bad coming down. >> it was not bad at all actually. actually less than normal. so pretty good. >> this is the final day of the summit. but with so many dignitaries in town,